private void SetMatrixValues(IList <bool> mRow, BoardSquare boardSquare)
{
var row = boardSquare.GetRowIndex();
var column = boardSquare.GetColumnIndex();
var value = boardSquare.GetValue() - 1;
int RegionIndex()
{
var regionSize = (int)Math.Sqrt(size);
var regionNum1 =
(int)Math.Floor(row / (double)regionSize) * regionSize +
(int)Math.Floor(column / (double)regionSize);
return(regionNum1);
}
// In order, sets of 81 indexes
var positionConstraint = row * size + column;
var rowConstraint = size * size + row * size + value;
var columnConstraint = size * size * 2 + column * size + value;
var regionConstraint = size * size * 3 + RegionIndex() * size + value;
// Initialize matrix where the constraint is satisfied
mRow[positionConstraint] = true;
mRow[rowConstraint] = true;
mRow[columnConstraint] = true;
mRow[regionConstraint] = true;
}
private IEnumerable <BoardSquare> GetNeighbours(BoardSquare currentSquare)
{
var Row = currentSquare.GetRowIndex();
var Column = currentSquare.GetColumnIndex();
var SubBoard = currentSquare.GetSubBoard(Column, Row);
var PlacedValues = new List <BoardSquare>();
PlacedValues.AddRange(_board.GetRow(Row));
PlacedValues.AddRange(_board.GetColumn(Column));
PlacedValues.AddRange(_board.GetSubBoard(SubBoard));
return(PlacedValues);
}